1. Bugatti Veyron Super Sport - also a tie for # 2Bugatti Veyron Super Sport set the 256 mph record in 2007, in order to better the earlier Bugatti Veyron, but then, Bugatti came back with a vengeance by beating the record by at least 11mph. The Veyron Super Sport gets its power from a 16 cylinder engine helped by 4 bi-turbochargers with a displacement of 487.8 cu in. Because each cylinder has four valves, this means the Veyron SS has a total of 64 valves. Engine generates a total of 1200 horsepower, nearly 200 hp more that the previous model. The Bugatti hits 0-62 mph in less than 3 seconds at 2.4 seconds. The progression in hitting given metrics for the Veyron SS include 150mph at 10 second, 186 mph at under 15 seconds, and in less than a minute, you could be going as fast as 245 mph.

2. Hennessey Venom GTThe Hennessey Venom GT has for an engine a 6.2-liter LS9 twin-turbo V-8, similar to the engine on the Chevrolet Corvette ZR1 one of the fastest production cars released. The car is offered in a mid-engine rear drive power-train with horsepower ranging from 725 to 1200. The drive train is provided by a Ricardo 6 speed transmission. Rumors abound that the Hennessey Venom GT has either tied or broken the record of the Bugatti Veyron Super Sports record of 267 mph.

2. Koenigsegg Agera R – also a tie for # 3Bugatti Veyron Super Sport’s tail clocking in at a blisteringly fast 0-168 mph in just 14.53 seconds. Powering the Agera R is a Koenigsegg-developed 5.0L V8 Twin Turbo engine. This robust behemoth generates a mind-blowing 1,115hp at 6,900 rpm all the way to 7,250 rpm. All this power is coupled with an impressive 885lb-ft of torque at 4100rpm.

3. SSC Ultimate AeroSSC Ultimate Aero, displacement of this same Chevrolet engine was increased to 6.3 liters and supercharger boost was increased to 14 psi. The results were simply unbelievable: almost 1200 horsepower and more than 1100 Newton meters of torque. Subsequent modifications such as twin-turbos and a new engine block, has allowed the output of the Ultimate Aero to increase even further. SSC Designed V8, 1287 HP, Torque: 1112 lb-ft @ 6150 rpm, max speed: 257.4 mph (414 km/h).

4. Saleen S7 Twin TurboWithin 3 years, automotive engineering worldwide has improved so much that 500+ horsepower is now much easily attainable than when it first appeared. Twin turbochargers are now equipped to the already formidable 7000 cc V8 engine found in the S7 (more on the engine later). 750 HP, Max RPM: 6300 RPM, Torque: 700 lb-ft @ 4800 rpm, Transmission: 6-Speed Manual, 0-60 mph: 2.8 seconds, and Top Speed: 248 mph (399 km/h).